Toyota 30CM3300.cuw Firmware: Tundra Engine Control Update
Learn how Toyota 30CM3300.cuw relates to a 2014 Tundra engine control update addressing DTC P2610 and the malfunction indicator light.
30CM3300.cuw is an engine control calibration for the 2014 Toyota Tundra listed as an updated calibration in Toyota Service Bulletin T-SB-0146-16. The bulletin addresses an illuminated malfunction indicator light associated with diagnostic trouble code P2610.
What the calibration controls
The engine control module manages engine operation using sensor readings and programmed control strategies. It also runs diagnostic checks and can request the malfunction indicator light when it detects a fault. P2610 concerns the control module’s internal engine-off timer performance, a diagnostic function associated with tracking time after the engine is switched off.
In practical terms, the bulletin identifies a software revision for a Tundra that has the specified warning-light condition and P2610. The service record does not establish that the calibration changes engine power, fuel economy or other driving characteristics.
How 30CM3300 appears in the service record
T-SB-0146-16, released on October 11, 2016, lists 30CM3300 as an updated calibration. The filename 30CM3300.cuw carries that calibration identifier in a Toyota firmware file. Its association with the bulletin is specific to the listed 2014 Tundra application and diagnostic condition, rather than every Toyota or Lexus vehicle with a similar calibration prefix.
A malfunction indicator light can have many causes. P2610 and the bulletin’s application details provide the relevant context for this calibration, while the complete vehicle and calibration information in the service record determines its applicability.